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Holmquistite: [ ](Li2Mg3Al2)Si8O22(OH)2
Comments: Greenish-black prismatic crystals of holmquistite in matrix. Location: Uto, Sodermanland, Sweden. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Holmquistite: [ ](Li2Mg3Al2)Si8O22(OH)2 Magnesioholmquistite: Li2(Mg,Fe++)3Al2Si8O22(OH)2
Comments: Dark blue thin bladed crystals of holmquistite (magnesioholmquistite) in amphibolite. Location: Uto, Sodermanland, Sweden. Scale: See Image. © Rruff Database